What size allen wrench is needed to remove it, 3mm is too small and 4mm is too big, I have never seen a 3.5.

 

Sorry I forget the size off hand I have it set aside just to use for it.
Did you try an american one?

 

i stripped mine.i replaced them with phillips screws.

 

I thought I had tried a 1/8 american yesterday, I just rechecked and it falls just larger then 3mm, so I will try it.

Thanks.

 

Every fastener in the 850 should be metric, unless someone stripped the original and replaced with U.S Standard.

Sometimes metric tools do have in-between sizes such as 2.5 or 3.5mm.

Every faster in aircraft is U.S Standard, unless someone screwed up or the aircraft is made in Russia (I don't know much about Russian aircraft, however).


JPN